Yorkey, Richard. <br/><br/>
Reply reguested: 30 letters of advice. 

 - Reading, Massachusetts:  Addison - Wesley Publishing Company,  1981. 
 - 127 páginas 
<br/><br/><label>ISBN: </label>0-201-10078-9 
<br/><br/><label>Subjects--Topical Terms: </label><br/>INGLES - ENSEÑANZA